package yjj;

import cn.hutool.captcha.CaptchaUtil;
import cn.hutool.captcha.CircleCaptcha;
import cn.hutool.captcha.LineCaptcha;

import javax.servlet.ServletException;
import javax.servlet.annotation.WebServlet;
import javax.servlet.http.HttpServlet;
import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpServletResponse;
import javax.servlet.http.HttpSession;
import java.io.IOException;

@WebServlet(urlPatterns = "/yjjcode")
public class CodeServlet extends HttpServlet {
    @Override
    protected void doGet(HttpServletRequest req, HttpServletResponse resp) throws ServletException, IOException {
        HttpSession session = req.getSession();
        LineCaptcha captcha = CaptchaUtil.createLineCaptcha(49,20,4,10);
        //获取验证码的值
        String code = captcha.getCode();
        //将获取的验证码存储到session中，并将键设置为yy
        session.setAttribute("yy",code);


        captcha.write(resp.getOutputStream());
    }
}
